480d3dd2ea
our unwind information for functions that are entry points into the kernel. When stepping to the next frame, the unwinder will let us know when sych a marker was encountered. We use this to stop the current unwind session, query the trapframe and restart a new unwind session based on the new trapframe. The implementation is a bit sloppy, but at this time there are bigger fish to fry.
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/*
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* Copyright (c) 2003 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_UNWIND_H_
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#define _MACHINE_UNWIND_H_
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struct uwx_env;
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struct unw_regstate {
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struct trapframe *frame;
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struct uwx_env *env;
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uint64_t keyval[8];
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};
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int unw_create(struct unw_regstate *s, struct trapframe *tf);
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void unw_delete(struct unw_regstate *s);
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int unw_step(struct unw_regstate *s);
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int unw_get_bsp(struct unw_regstate *s, uint64_t *r);
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int unw_get_cfm(struct unw_regstate *s, uint64_t *r);
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int unw_get_ip(struct unw_regstate *s, uint64_t *r);
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int unw_get_sp(struct unw_regstate *s, uint64_t *r);
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int unw_table_add(uint64_t, uint64_t, uint64_t);
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void unw_table_remove(uint64_t);
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#endif /* _MACHINE_UNWIND_H_ */
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